United’s nonstop San Francisco–Cancún sale: US$391 round-trip, 52% below usual
United has nonstop economy fares from San Francisco to Cancún starting at US$391 round-trip for January 4–13, 2027, with higher-priced options around New Year’s.
United’s nonstop economy fare from San Francisco (SFO) to Cancún (CUN) starts at US$391 round-trip, compared with a typical fare of about US$818 for a five- to nine-day trip on the route.
The lowest fare covers January 4–13, 2027; other date combinations may also be available. Additional round-trip options include January 3–12 at US$486, December 30, 2026–January 8, 2027 at US$634, and December 31, 2026–January 8, 2027 at US$634.
In Cancún, spend time at Playa Delfines, explore the El Rey Maya ruins and visit the Museo Maya de Cancún.
Check availability for your exact dates and book directly with United. Prices can move quickly.
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